My parents bought a property in a gated retirement community in Florida recently and spent their first winter as snowbirds down there. During my spring break, I drove down to visit. I was struck with how homogenous the population was: all white, upper-middle class, and heterosexual. As I've thought more about this--which I assume is a well-established social fact--it occurred to me that my parents' non-retirement neighborhood in Michigan is nearly as homogenous. It seems anecdotally that relocation in retirement does not so much exacerbate residential segregation as it simply extends and reifies it. Does anyone know of research in this area? It has to be out there.